[Summary view]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * TeX filter settings
  19   *
  20   * @package    filter
  21   * @subpackage tex
  22   * @copyright  2007 Petr Skoda {@link http://skodak.org}
  23   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24   */
  25  
  26  defined('MOODLE_INTERNAL') || die;
  27  
  28  if ($ADMIN->fulltree) {
  29  
  30      require_once($CFG->dirroot.'/filter/tex/lib.php');
  31  
  32      $items = array();
  33      $items[] = new admin_setting_heading('filter_tex/latexheading', get_string('latexsettings', 'filter_tex'), '');
  34      $items[] = new admin_setting_configtextarea('filter_tex/latexpreamble', get_string('latexpreamble','filter_tex'),
  35                     '', "\\usepackage[latin1]{inputenc}\n\\usepackage{amsmath}\n\\usepackage{amsfonts}\n\\RequirePackage{amsmath,amssymb,latexsym}\n");
  36      $items[] = new admin_setting_configtext('filter_tex/latexbackground', get_string('backgroundcolour', 'admin'), '', '#FFFFFF');
  37      $items[] = new admin_setting_configtext('filter_tex/density', get_string('density', 'admin'), '', '120', PARAM_INT);
  38  
  39      $default_filter_tex_pathlatex   = '';
  40      $default_filter_tex_pathdvips   = '';
  41      $default_filter_tex_pathdvisvgm = '';
  42      $default_filter_tex_pathconvert = '';
  43      if (PHP_OS=='Linux') {
  44          $default_filter_tex_pathlatex   = "/usr/bin/latex";
  45          $default_filter_tex_pathdvips   = "/usr/bin/dvips";
  46          $default_filter_tex_pathdvisvgm = "/usr/bin/dvisvgm";
  47          $default_filter_tex_pathconvert = "/usr/bin/convert";
  48      } else if (PHP_OS=='Darwin') {
  49          // most likely needs a fink install (fink.sf.net)
  50          $default_filter_tex_pathlatex   = "/sw/bin/latex";
  51          $default_filter_tex_pathdvips   = "/sw/bin/dvips";
  52          $default_filter_tex_pathdvisvgm = "/usr/bin/dvisvgm";
  53          $default_filter_tex_pathconvert = "/sw/bin/convert";
  54  
  55      } else if (PHP_OS=='WINNT' or PHP_OS=='WIN32' or PHP_OS=='Windows') {
  56          // note: you need Ghostscript installed (standard), miktex (standard)
  57          // and ImageMagick (install at c:\ImageMagick)
  58          $default_filter_tex_pathlatex   = "c:\\texmf\\miktex\\bin\\latex.exe";
  59          $default_filter_tex_pathdvips   = "c:\\texmf\\miktex\\bin\\dvips.exe";
  60          $default_filter_tex_pathdvisvgm   = "c:\\texmf\\miktex\\bin\\dvisvgm.exe";
  61          $default_filter_tex_pathconvert = "c:\\imagemagick\\convert.exe";
  62      }
  63  
  64      $pathlatex = get_config('filter_tex', 'pathlatex');
  65      $pathdvips = get_config('filter_tex', 'pathdvips');
  66      $pathconvert = get_config('filter_tex', 'pathconvert');
  67      $pathdvisvgm = get_config('filter_tex', 'pathdvisvgm');
  68      if (strrpos($pathlatex . $pathdvips . $pathconvert . $pathdvisvgm, '"') or
  69              strrpos($pathlatex . $pathdvips . $pathconvert . $pathdvisvgm, "'")) {
  70          set_config('pathlatex', trim($pathlatex, " '\""), 'filter_tex');
  71          set_config('pathdvips', trim($pathdvips, " '\""), 'filter_tex');
  72          set_config('pathconvert', trim($pathconvert, " '\""), 'filter_tex');
  73          set_config('pathdvisvgm', trim($pathdvisvgm, " '\""), 'filter_tex');
  74      }
  75  
  76      $items[] = new admin_setting_configexecutable('filter_tex/pathlatex', get_string('pathlatex', 'filter_tex'), '', $default_filter_tex_pathlatex);
  77      $items[] = new admin_setting_configexecutable('filter_tex/pathdvips', get_string('pathdvips', 'filter_tex'), '', $default_filter_tex_pathdvips);
  78      $items[] = new admin_setting_configexecutable('filter_tex/pathconvert', get_string('pathconvert', 'filter_tex'), '', $default_filter_tex_pathconvert);
  79      $items[] = new admin_setting_configexecutable('filter_tex/pathdvisvgm', get_string('pathdvisvgm', 'filter_tex'), '', $default_filter_tex_pathdvisvgm);
  80      $items[] = new admin_setting_configexecutable('filter_tex/pathmimetex', get_string('pathmimetex', 'filter_tex'), get_string('pathmimetexdesc', 'filter_tex'), '');
  81  
  82      // Even if we offer GIF, PNG and SVG formats here, in the update callback we check whether
  83      // required paths actually point to executables. If they don't, we force the setting
  84      // to GIF, as that's the only format mimeTeX can produce.
  85      $formats = array('gif' => 'GIF', 'png' => 'PNG', 'svg' => 'SVG');
  86      $items[] = new admin_setting_configselect('filter_tex/convertformat', get_string('convertformat', 'filter_tex'), get_string('configconvertformat', 'filter_tex'), 'gif', $formats);
  87  
  88      foreach ($items as $item) {
  89          $item->set_updatedcallback('filter_tex_updatedcallback');
  90          $settings->add($item);
  91      }
  92  }